Note 3 - Major Customers and Suppliers	6 Months Ended
Jun. 30, 2021
Notes to Financial Statements
Major Customers and Suppliers Disclosure [Text Block]	(3) MAJOR CUSTOMERS AND SUPPLIERS: Our revenues are derived primarily from chemical supply and pharmaceutical companies located primarily in the United States. For the six months ended June 30, 2021 three major customers accounted for 64% of total revenues. For the six months ended June 30, 2020, two major customers accounted for 60% of total revenues. Substantially all inventory purchases were from three vendors in 2021 and 2020. These vendors are located primarily outside the United States. We have three sources for our Aquaplex® products. There are multiple sources for our Trappsol® products. For the six months ended June 30, 2021, the product mix of our revenues consisted of 5% cyclodextrin complexes and 96% basic natural and chemically modified cyclodextrins. For the three months ended June 30, 2021 the product mix of our revenues consisted of 5% cyclodextrin complexes and 95% basic natural and chemically modified cyclodextrins. For the six months ended June 30, 2020 the product mix of our revenues consisted of 6% biopharmaceuticals and 94% basic natural and chemically modified cyclodextrins. For the three months ended June 30, 2020 the product mix of our revenues consisted of 100% basic natural and chemically modified cyclodextrins.

Note 3 - Major Customers and Suppliers

6 Months Ended

Jun. 30, 2021

Major Customers and Suppliers Disclosure [Text Block]

(3) MAJOR CUSTOMERS AND SUPPLIERS:

Our revenues are derived primarily from chemical supply and pharmaceutical companies located primarily in the United States. For the six months ended June 30, 2021 three major customers accounted for 64% of total revenues. For the six months ended June 30, 2020, two major customers accounted for 60% of total revenues.

Substantially all inventory purchases were from three vendors in 2021 and 2020. These vendors are located primarily outside the United States.

We have three sources for our Aquaplex® products. There are multiple sources for our Trappsol® products.

For the six months ended June 30, 2021, the product mix of our revenues consisted of 5% cyclodextrin complexes and 96% basic natural and chemically modified cyclodextrins. For the three months ended June 30, 2021 the product mix of our revenues consisted of 5% cyclodextrin complexes and 95% basic natural and chemically modified cyclodextrins. For the six months ended June 30, 2020 the product mix of our revenues consisted of 6% biopharmaceuticals and 94% basic natural and chemically modified cyclodextrins. For the three months ended June 30, 2020 the product mix of our revenues consisted of 100% basic natural and chemically modified cyclodextrins.